Round: 25 Ground: Synthetic outdoor
| ITF Singapore F2 | 2017/05/31 05:25 | Ehara, Hiroyasu v Sarmiento, Raymond | 2-6,3-6 |
| ITF Singapore F1 | 2017/05/28 05:00 | Kelly, Dayne v Ehara, Hiroyasu | 3-6,3-6 |
| ITF Singapore F1 | 2017/05/26 03:00 | Katayama, Sho v Ehara, Hiroyasu | 3-6,6-4,2-6 |
| ITF Singapore F1 | 2017/05/25 02:00 | Ehara, Hiroyasu v Shiga, Masato | 6-1,6-0 |
| ITF Singapore F1 | 2017/05/23 04:10 | Verbeek, Sem v Ehara, Hiroyasu | 6-7,1-6 |
| Challenger Gimcheon Qual | 2017/04/29 05:10 | Niki, Takuto v Ehara, Hiroyasu | 6-1,6-4 |
| ITF Japan F5 | 2017/04/03 03:20 | Sho Shimabukuro v Ehara, Hiroyasu | 6-1,6-7,6-3 |
| ITF Japan F4 | 2017/03/29 03:40 | Ehara, Hiroyasu v Katayama, Sho | 2-6,4-6 |
| ITF Japan F6 | 2017/05/31 01:00 | Kikuchi, Gengo v Sekiguchi, Shuichi | 6-4,6-2 |
| ITF Japan F6 | 2017/05/29 05:55 | Yuki Mochizuki v Sekiguchi, Shuichi | 3-6,4-6 |
| Challenger Seoul | 2017/05/09 04:00 | Duckhee Lee v Sekiguchi, Shuichi | 6-0,6-3 |
| Challenger Seoul Qual | 2017/05/08 02:00 | Glasspool, Lloyd v Sekiguchi, Shuichi | 3-6,3-6 |
| Challenger Seoul Qual | 2017/05/07 04:20 | Makoto Ochi v Sekiguchi, Shuichi | 1-6,1-6 |
| Challenger Seoul Qual | 2017/05/06 06:05 | Kim, Yu-Seob v Sekiguchi, Shuichi | 1-6,4-6 |
| Challenger - Taipei | 2017/04/18 06:20 | Sekiguchi, Shuichi v Skugor, Franko | 1-6,4-6 |
| ITF China F5 | 2017/04/15 05:35 | Mousley, Bradley v Sekiguchi, Shuichi | 7-6,7-6 |